Players that come from schools that are on the quarter system as opposed to semesters get unfairly punished by the rule, which prevents prospects from joining their new teams until class is dismissed.

So, while some rookies get to take part in their teams’ respective mandatory minicamps, others are left out.

For example, the Carolina Panthers’ first-round pick Christian McCaffrey went to Stanford, which is on the quarters system. As a result, he was only able to practice for one day this week even though he wasn’t even enrolled.

Atlanta’s No. 26 overall selection Takkarist McKinley had the same problem with UCLA, whose quarter did not end until Thursday. With the Falcons’ camp wrapping up the same day, he didn’t get a chance to participate. McKinley is recovering from shoulder surgery and won’t be able to take the field for several more weeks, but he could have been on hand to take part in drills and learn from his coaches.